Author Topic: Teds new project a CB500 K1 mostly version 0.5 circa 1972.  (Read 46137 times)

Offline Oddjob

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #600 on: September 13, 2023, 12:03:36 AM »
I've read my post about fitting the cam chain - it reads oddly complicated.
Put more simply the camshaft is fed from the right side loop the chain through the camshaft first, then feed the lobes through the sprocket. Doing it this way results in the chain being on the right side of the sprocket & boss on the camshaft.

Wouldn't it be easier to fit the sprocket past the lobes whilst it's off the engine Ted, leave it hanging next to where it fits and then thread it thorough the chain?
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Offline Sesman

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #601 on: September 13, 2023, 08:11:18 AM »
As Ted described, the trick is the initial set up as pictured. The trick is to engage the chain on the sprocket off the cam, rotate anti-clockwise to locate the first bolt then turn clockwise to engage the second bolt. Check the alignment. If it’s incorrect reset the process, but compensating for selection of the correct cam tooth. I know you know that by the way, Ken.
« Last Edit: September 13, 2023, 11:22:21 AM by Sesman »

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #602 on: September 13, 2023, 09:11:10 AM »
A picture paints a thousand words.👍👍👍
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #603 on: September 13, 2023, 09:26:10 AM »
I've read my post about fitting the cam chain - it reads oddly complicated.
Put more simply the camshaft is fed from the right side loop the chain through the camshaft first, then feed the lobes through the sprocket. Doing it this way results in the chain being on the right side of the sprocket & boss on the camshaft.

Wouldn't it be easier to fit the sprocket past the lobes whilst it's off the engine Ted, leave it hanging next to where it fits and then thread it thorough the chain?

It's difficult to explain but if you do it  that way I found  the left  end of the cam grounds on the head well before it can reach the end bearing. You need to end up with the chain on the right side of the sprocket not the left. Phil's photo says it all.

On a used chain it might work if the chain is on the left side.
« Last Edit: September 13, 2023, 09:28:12 AM by McCabe-Thiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline K2-K6

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #604 on: September 13, 2023, 09:27:42 AM »
A picture paints a thousand words.👍👍👍

I'll name that tune in one Ted... Telly Savalas 1975, "if a picture paints" amusingly from the right period for these bike too  ;D

You're right Ted, it's awkward getting your head round some of these fiddly assembly just from description. Once into place though you can see just how it's done.

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #605 on: September 13, 2023, 09:39:29 AM »
A picture paints a thousand words.👍👍👍

I'll name that tune in one Ted... Telly Savalas 1975, "if a picture paints" amusingly from the right period for these bike too  ;D

You're right Ted, it's awkward getting yourself head round some of these fiddly assembly just from description. Once into place though you can see just how it's donnce /quote]

It is indeed K2-K6 plus my negative inner self is telling me I must have the guides in wrong whilst my "you can do it" side of my brain says no you did them right and tries to calmly look at all the angles.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline davidcumbria

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #606 on: September 13, 2023, 12:05:57 PM »
Going to be doing just this in a few days time. Feel like I’ve had such a good primer. Did you hone the bores or fit new piston rings Ted ?
500/4 in 79. No bikes for 30 years. 750/4 in 2013, 550/4 in 2023. Also own  R1100GS, RD350LC YPVS , Triumph Street Triple, Yamaha XT250

Offline Bryanj

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #607 on: September 13, 2023, 12:28:20 PM »
Telly Savalas butchered that song originaly sung by David Gates of Bread(the group not the tv series)

Offline Johnny4428

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #608 on: September 13, 2023, 02:40:07 PM »
Telly Savalas butchered that song originaly sung by David Gates of Bread(the group not the tv series)
“Where’s me lunch” 😂😂
1952 Cymoto on Triumph bicycle.
1961 Matchless G3
1974 Honda CB550K1. Running resto,
1978 Honda CB550K3.
1999 ST1100 Pan European 50th Anniversary.
1975,1980,1984,1986 Honda C90’s
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Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #609 on: September 13, 2023, 05:35:21 PM »
Going to be doing just this in a few days time. Feel like I’ve had such a good primer. Did you hone the bores or fit new piston rings Ted ?

Bryan did the rebore plus a heavy duty cam chain fron Ken there was a brief moment when I thought the chain was half a link too tight!😁😁😁
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Oddjob

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #610 on: September 13, 2023, 06:49:04 PM »
Even a new oe chain is tight to put on Ted, plus I’ve never seen a chain qouted in half links, like 88.5 for example 😀😀
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #611 on: September 13, 2023, 07:39:09 PM »
Even a new oe chain is tight to put on Ted, plus I’ve never seen a chain qouted in half links, like 88.5 for example 😀😀

I jest about the half link - a full link would be too loose, the old chain was a sod to get off as well.
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline Oddjob

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #612 on: September 13, 2023, 08:07:46 PM »
Yeah, I was pulling your leg as well. It's a bit like fitting the primary chain when it's new, sometimes it needs a helping hand to get it to fit. Whilst a part worn one just falls on.

Oddly, I've never had a problem removing a camchain, I tend to remove the 2 bolts and knock the sprocket off the cam, loads of slack then.
Kids in a the back seat cause accidents.
Accidents in the back seat cause kids.

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #613 on: September 27, 2023, 12:31:03 PM »
Cam cover now finally in place so that is the engine unit buttoned up for winter. Currently sorting out the carburetors that should not need too much work doing to them as they were restored a couple of years or so ago by Gerben. Standing has taken its toll with rusty carb bowl screws and what appears to be loose O rings that I will replace.

Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline McCabe-Thiele (Ted)

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Re: Teds new project a CB500 K1 mostly version 0.5 circa 1972.
« Reply #614 on: October 12, 2023, 08:22:23 PM »
Hit a small snag when assembling my cleaned carbs with new O rings using NJ's excellent kit.

The first three carbs went together a treat but number four carb has one stripped bowl thread - not too bad just one out of 16 screws - almost half the screws were rusted so probably due to removing a screw that was rusted.

IIRC from DomP post a M4 Helicoil will sort it - any links to a suitable repair kit welcome - I am a Helicoil virgin regarding DIY kits so any advice is welcome. I assume kits come with a drill bit - can this be done hand held as I do not have  a pillar drill?

I will look on U tube for an idiots guide.
« Last Edit: October 12, 2023, 08:25:27 PM by McCabe-Thiele (Ted) »
Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

 

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